Shi, G., Park, S.H., Kim, J., Kim, M. and Park, L.S. (2018) Side-Chain Polyimides as Binder Polymers for Photolithographic Patterning of a Black Pixel Define Layer for Organic Light Emitting Diode. International Journal of Polymer Science, 2018, Article ID: 3790834.
https://doi.org/10.1155/2018/3790834

has been cited by the following article:

• TITLE: Acidic Polyester Imides as Thermally Stable Binder Polymers for Negative-Tone Black Photoresist

  AUTHORS: Genggongwo Shi, Kyeongha Baek, Jun Bae, Lee Soon Park

  KEYWORDS: Polyester Imide, One-Pot Solution Polymerization, Black Photoresist, Photolithography

  JOURNAL NAME: Materials Sciences and Applications, Vol.11 No.4, April 13, 2020

  ABSTRACT: Polyimides are well-known for their high chemical inertness and thermal stability. However, it is usually challenging to synthesize UV-curable polyimides since the imidization reaction requires such harsh conditions that acrylate type double bonds cannot withstand. In this work, synthetic methods are developed to obtain polyester-imide type binder polymers with high thermal stability, high compatibility with the other components of the black photoresist, and fine photolithographic patterning property for the negative-tone black photoresist. The syntheses of diimide-diacid or diimide-diol intermediates for the polyesterification with dianhydride gave polyester imides which meets this requirement. The photolithographic tests have shown that the patterning of the micron-sized PDL of the organic light emitting diode (OLED) panel could be obtained. This work will interest the researchers working on the design and optimization of thermally stable binder polymers.